Browsing by Author "Hsu, Shuo-Jen"

Now showing 1 - 3 of 3

CONSERVING BANDWIDTH IN A WIRELESS SENSOR NETWORK FOR TELEMEDICINE APPLICATION
(2010)
Hsu, Shuo-Jen
;
Chen, Chin-Hsing
;
Chen, Show-Hong
;
Huang, Wen-Tzeng
;
Chang, Yuan-Jen
Telemedicine aided by wireless sensor networks (WSN) has recently become a healthcare trend. Many previous studies have adopted the ZigBee-based WSN to implement a platform and/or a telemedicine system. However, the low data rate and bandwidth have limited the maximum number of nodes in a WSN during continuous and simultaneous transmission. The issue of low data throughput has not been addressed in previous research. In this study, we propose an arrhythmia-aware system, and a new DSP-based WSN platform is developed for the high compression performance of physiological data in a ZigBee-based WSN. Proven by simulations and several real tests, the combination of the proposed platform and the sensor nodes can lead to more bandwidth conservation and extend the WSN scale for the next generation of telemedicine system.
Development of Telemedicine and Telecare over wireless sensor network
(2008)
Hsu, Shuo-Jen
;
Wul, Hsin-Hsien
;
Chen, Shih-Wei
;
Liu, Tsang-Chi
;
Huang, Wen-Tzeng
Telemedicine & Telecare aided by wireless sensor network (WSN) has recently become a health-caring trend in the future. However, the low data rate of WSN limited the acceptable quality of service. Researches [1-6] adopted ZigBee-based WSN to implement a platform and/or a telecare system. However, the capacity problem due to low data rate characteristic has not been addressed. Our research proposed an arrhythmia-aware telecare system and a new DSP-based WSN platform, enabling good digital signal processing performance! in ZigBee-based WSN. Proved by simulations and several real tests, combination of the proposed platform and system can provide a more bandwidth-conserving and reliable telecare system, with lower wireless traffic jam and higher stability.
The development of wireless sensor network for ECG monitoring
(2006)
Lin, Jun-Liang
;
Liu, Hsien-Chieh
;
Tai, Yu-Ting
;
Wu, Hsin-Hsien
;
Hsu, Shuo-Jen
The main problem we want to solve contains two subjects: The first one is the patient's pressure due to wired physiological signal estimation. With wireless sensor network technique, patients only need to carry a few small nodes, and then the physiological signal can be transmitted in the air. The other subject of the vital problem is that some protocols, like Bluetooth, provide a peer to peer wireless communication technique, but such peer to peer network may need a complex algorithm to find the best data transmission path. In this study, we use the hierarchy routing as network topology that three-layer architecture contains PAN coordinator, router and device. The study focuses on implementation of a prototype electrocardiography (ECG) system which replaces wired connections between sensor points and a central node with wireless links. Successful implementation of the final system would be of benefit to all involved in the use of ECG as access to and movement of the patient would not be impeded by the physical constraints imposed by the cables. Most aspects of the design would also be portable to other sensor applications, making the work relevant to a vast range of systems where movement of sensors is desirable and constrained by hard-wired links.